Bowling pin handling and changing machine



Feb. 28, 1956 J. M. FLUKE BOWLING PIN HANDLING AND CHANGING MACHINE Filed Aug. 18, 1947 l0 Sheets-Sheet 1 INVENTOR B JOHN. M. FLUKE.

Maf M* ATTORNEY Feb. 28, 1956 J. M. FLUKE BOWLING PIN HANDLING AND CHANGING MACHINE ATTORNEY Feb. 28, 1956 J. M. FLUKE BOWLING PIN HANDLING AND CHANGING MACHINE 10 Sheets-Sheet 3 Filed Aug. 18, 1947 NNN,

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ATTORNEY EN @N5/Ill@ INVENTOR 10 Sheets-Sheet 4 @w A@ 5 UV 5| IIIMJIIW llll 7\ FIG 6 W05/ we I H INVENTOR JOHN. M. FLUKE.

ATroRNEY Feb. 28, 1956 J. M. FLUKE BOWLING PIN HANDLING AND CHANGING MACHINE Filed Aug. 18, 1947 Feb. 28, 1956 J. M FLUKE 2,736,555

BOWLING PN HANDLING AND CHANGING MACHINE Filed Aug. 18, 1947 lO Sheets-Sheet 5 Fl G. 7

INVENTOR JOHN. M. FLUKE.

ATTORNEY Feb. 28, 1956 J. M. FLUKE BOWLING PIN HANDLING AND CHANGING MACHINE l0 Sheets-Sheet 6 Filed Aug. 18. 1947 www mwN

l INVENTOR J. M. FLUKE 2,736,555

BOWLING PIN HANDLING AND CHANGING MACHINE 10 Sheets-Sheet 7 Feb. 28, 1956 Filed Aug. 18, 194'? FIGB INVENTOR JOHN M. FLUKE.

ATTORNEY Feb. 28, 1956 J. M. FLUKE 2,736,555

BOWLING PINv HANDLING AND CHANGING MACHINE Filed Aug. 18, 1947 10 Sheets-Sheet 8 FIG. IO

INVENTOR 358 JOHN M. FLUKE.

ATTORNEY Feb. 28, 1956 J. M. FLUKE 2,736,555

BOWLING PIN HANDLING AND CHANGING MACHINE Filed Aug. 18, 1947 10 Sheets-5h88?, 9

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TRANSFER cups Row STORAGE F|T AND coNvEYED To IST. ROW STORAGE PINS A IN IST.

ROW STORAGE P PINS A IN IST Row sroRAGE FIG. I6

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ROW STORAGE Feb. 28, 1956 J. M. FLUKE BOWLING PIN HANDLING AND CHANGING MACHINE 10 Sheets-Shea?I l0 Filed Aug. 18, 1947 INVENTOR JOHN' M. FLUKE ATTORNEY United States Patent BOWLING PIN HANDLING ANnv vciLAN'GlN'f'i MACHINE Jaim M. Fluke, Fairfield, conn., assigner to American Machine and Foundry Company, a corporation of New ersey Application August 18, 194-7, SralNo'. 769,214 26 claims. (ci. 273-443) This invention relates to bowling pin setting machines and more particularly to improvements in automatic bowling pin spotting machines having mechanism for spotting and respotting pins, and for eiecting changes in sets of pins whenever it is desired to change from one set of pins to another, as, for example, if it is desired to change from league game pins to open-play pins, or vice versa, or to change pins, preferably in sets in order to equalize wear and tear on several sets of pins, which may be all league pins or open play pins. Y y

In bowling pin spotting machines heretofore known, it has been customary to employ two or more sets of pins in order that ywhile one set of pins, usually ten, isin actual play,` the other pins are distributed in variousconveying parts of the machine and/orlying in the pit awaiting delivery to the spotter `or a pin magazine ready for delivery to the spotter. In machines which require more than two sets of pins, a'nd particularly those in which less than ten pins to a set are used, an unsatisfactory situation is present because of the necessity of breaking up sets of pins, a set of pins usually consisting of ten pin. also adds to the costs. l

The present invention overcomes this diflic'ulty and makes it possible to use no more than two full sets of pins. r[his is accomplished by providin'ga pin assembling conveyor provided with a number ofpin supporting holders, usually ten, so constructed and arranged vthat pins are fed to a pin delivery station and delivered therefrom to a spotter.

Arranged in cooperative associationY with the p'in handling mechanism, described directly above, la pin storage device in which full sets of pins can berma'intained in reserve for change or substitution for pins in play.

The invention takes into consideration 4theproblem of automatically transferring one or more setswof pins from active play intostorage and the replacement of'A such sets of pins with reserve sets for further play of the game. f

For instance, it is well known that in open play, bowling alley proprietors very often use wornpins or pins which have been dressed or redress'ed in order to'r'n'ake them suitable for further play of the game although such pins would not conform to American Bowling Congress requirements for league play. I-Iowever,k fh'e bowler often does not mind the lack of uniformity inrpins against which he is rolling. Different conditions'obtain, however, in so-called league bowling where pins used must meet certain standards specified by the American Bowling Congress. In this case, and also whenra bowler requests league play pins, it is necessary to remove the open play pins and replace themlwith league pins. u

In automatic bowling pin spotting machines, it ishighly desirable that setsn of pins can Ybe changed with a minimum of effort withoutl interrupting the play of the for an unduly long period of time, especially when sets This contributes to ineiiiciency in pin usage and ICC 2 of league play pins are to be substituted for open play pins', or vice versa.

According to my invention, and the machine 'illustrated, two sets of pins are normally in play. Two sets of reserve pins, which may be open play, or league pins,Y are retained in storage/for rapid change-over and substituted if and when it is desired to switch the sets of pins and send those in play to storage and substitute therefor p'ins which formerly were in storage. While reference is made to exchanging open play pins for league pins, and viceA versa, it is obvious that the exchange of pins could be so arranged that open play or league pins in reserve could be exchanged foropen play or league pins iu play, respectively. For example, if there are two sets of league pins in reserve, and two sets of league pins in play, the reserve league pins can be exchanged ,for the league pins in play. The same condition holds formopen play pins. This obivously minimizes wear and tear on pins and makes the useful cycle of each pin more uniform, I y y p ItY is an object of my invention tov provide novel bowling pin handling mechanism for a bowling pin spotting machine. g l Y A The invention also contemplates the use of coordinated and cooperating pinconveying, handling and manipulating mechanisms which deliver pins to a position for loadingv into a pin spotter and make possible the automatic andy rapid., change-over of one set of pins for another.

M The invention also consists in the provision of automatically operated pin changing mechanism which functions toetfect a substitution of one set of pins for another. `For instance, if the game is played with a set of pins and it is desired to replace them with a'reserve set, bylmeans provided by thisinvention, the desired change can ,beinadfe automatically in a minimum amount of time. yAltl'lough the'machin'e described is designed primarily for effecting 4the exchange of two sets of pins, it may also beso operated ans to effect the change of a single set of pins. i In this manner singlevsets ofpins can be exchanged andthe wear andvtear of pins can be soequalized that all pills in play, ahdin Storage have a ,longer and more 1miform life. This arrangement is especially desirable where four sets of,l league pinsnorl four sets of open-play pins are beingvused in connection withra machine. It makes ble `the progressive usel of pins, preferably sets so tha froin time to time at the will of the bowlingpalley proprietor a different set of pins can be made available for play.

Itl is a further object of my invention to provide a magazine capable f storing pins in reserve Vready for substitution for other pins which may be in play at the time such reserve Apins are held in storage.

Thel mechanism u sed for effecting the ychange-over when once set into operation, automatically functions to substitute a number of pins corresponding to the number of pins which were in play prior to the operation of the pinV changing mechanism. Y

With these and lother objects not specifically mentioned in View, the invention consists in certain combinations and-constructions which will be hereinafter fully described, and then set forth in the claims hereunto ap'- pended. g

In the` accompanying drawings which illustrate a p`re`- feired embodiment of the invention and form a part of thisspecilication, and in which like characters of reference indicate the same orlike parts:

Figure 1 is a partial side elevation of a bowling pin spottingwmachine embodying the invention;

, Figure 2..is a front elevation taken on line 2 2 of 3,.wi th parts rbroken away, illustrating themechan imvemplfoyedcfor elevating pins for `selective delivery to tli pindistributing device'and the storage device;

Figure 3 is a plan view of the rea-r portion of the pin spotting machine, showing the relative position of the pin distributing device with respect to the pin elevating conveyor;

Figure 4 is a detailed View of the pin elevating conveyor drive taken on line 4 4 of Figure 3;

Figure 5 is a view taken on line 5 5 of Figure 4;

Figure 6 is an elevation taken on line 6-6 of Figure 5;

Figure 7 is a rear elevation with parts broken away of the pin storage device;

Figure 8 is a plan view of the same including a partial section of the rear of the pin distributing device;

Figure 9 is a side elevation of the pin storage device in relation to the pin distributing device;

Figure 10 is an enlarged view of the pin storage indexing mechanism taken on line 10-10 of Figure 7;

Figure 1l is an enlarged view taken on line 11-11 of Figure 7;

Figures 12-18 are schematic diagrams showing successive steps in effecting the exchange of two sets of pins in the storage for two sets of pins in the pin spotting machine; and

Figure 19 is a wiring diagram showing a suitable circuit for controlling the operation of the several parts of the machine.

This invention is particularly adaptable for use in a machine of the general type disclosed in Rundell Patent No. 2,388,707, issued November 13, 1945; Schmidt application, Serial No. 636,737, for Bowling Pin Setting Machine, led December 22, 1945, now Patent 2,578,319, issued December 11, 1951; and Broekhuysen application, Serial No. 627,605, filed November 9, 1945, now Patent 2,559,274, granted July 3, 1951. Its use is not to be considered limited to such machines, however, since it may find ready application in other types of bowling pin spotting machines.

In the machines disclosed and described in the above referred to patents, bowling pins delivered into the pit of an alley are raised by conveying mechanism and are conveyed by mechanism forming a part of the general conveying system between a pair of spaced spiral members designed to arrange bowling pins entering therebetween into an aligned assembly awaiting delivery therefrom to a pin spotter by means of a pin transfer device.

As mentioned hereinabove, from time to time, it is necessary to dress and/ or repair bowling pins in order to prolong their periods of use and maintain operating costs as low as possible. Where it is necessary to dress down or turn a pin so as to reduce its girth such that its maximum diameter is also reduced, it sometimes happens that when a plurality of bowling pins, usually ten or eleven, is fed between the two spaced pin supporting members awaiting delivery by the transfer device to the pin spotters, the longitudinal axes of the pins may be improperly positioned with respect to the grippers of the transfer device which engage the several pins in the aligned assembly, hold them firmly, and deliver them to the pin spotters.

The present machine constitutes a solution of this problem'masmnch as it makes possible the delivery of pins to a pin dellvery station where each pin is substantially, accurately positioned for proper engagement and removal by the pin transfer grippers to the pin spotters. Referring to the drawings in Figures 1, 2 and 3, there 1s shown a bowling pin spotting machine of the general type referred to consisting of side frames 2 between which are supported the several operating parts of the machine. Side frames 2 are adapted to be supported on the kick backs 3 of a bowling alley.

A sweep S (as shown in Figure 1) is constructed and operated in a manner similar to that shown and described in Schmidt Patent 2,578,319 by means of rack 4 and pinion 5. Sweep S is lowered into operative position relative to an alley G for sweepingy deadwood and unwanted standing pins into the pit P onto apron 10 which at the proper time is raised to deliver pins rearwardly between the transverse ball guides 14 into chamber 15 from whence the pins are conveyed by mechanism described more in detail hereinafter.

Sweep S is attached to chains 11 running on sprockets 12 driven by a suitable chain running on a lower sprocket (not shown), and a sprocket 9 which in turn is driven by chain 13 running on sprocket 6 attached to shaft 7 which is rotated by rack 4, and pinion 5, as described. At the proper time during the operation of the machine, in a manner similar to that described in said Schmidt Patent 2,578,319, the rotation of a suitable cam (not shown) on shaft 299, which is tracked by cam follower 295 on lever 293 causes the movement of rack 4 and hence the desired rotation of pinion 5 to eiect the operation of moving the sweep S back and forth along the pin supporting portion of the alley. Sweep S is raised and lowered at the proper time during the operation of the machine by means of cable 8, secured to sweep bracket 29, which runs on pulley 31 loose on shaft 7. One end of cable 8 is secured to lever 33 loosely mounted on shaft 34 having a follower (not shown) engaging a suitable cam (not shown) on shaft 299. A suitable guard (not shown) is employed to prevent a player from rolling a ball down the alley when pins are being spotted and respotted. After the pins and a ball have been swept into the pit they are received upon a flexible apron 10 which may be similar in construction and operation to that described in Schmidt Patent 2,578,319. One end of the apron is attached to slide blocks 15 adapted to be moved by cables 17 upwardly to a discharge position; the other end is` attached to a roller 12. When the apron is wound up, pins and balls carried thereby are ejected by the apron rearwardly therefrom.

The ball comes to rest and rolls along transverse guideways 14 which deliver it onto a ball return runway of conventional design extending along the alley. Pins drop downwardly between rails 14 into pin receiving chamber 15. Some of the pins are received directly upon the upper run of an inclined transverse conveyor 16 (Figure 2) having flights 18 which carry the pins upwardly towards the center of the machine. Pins at the other side of the center of the machine pass downwardly upon a horizontal and rearwardly inclined oscillated plate 26 pivoted at 21 at its upper edge on the transverse wall or panel 22.

Plate 20 directs any pins falling onto it rearwardly into engagement with the lower, upwardly moving end of the main elevating conveyor E (Figure 2). Elevator E cornprises a pair of spaced chains 24 mounting spaced pin carrying fingers 26. The construction and operation of elevator E is similar to that disclosed in Rundell Patent No. 2,388,707, except that the pin elevating flight portion is more inclined and the conveyor has a somewhat triangular formation. Chains 24 run on guide sprockets 28, and driving sprockets 32, the latter being located adjacent the top portion of the conveyor E. The drive for sprockets 32 is described more in detail hereinafter.

The provision of conveyor 16 in chamber 15 at one side of the machine and delector plate 20 at the other side thereof enables pins received in chamber 15 to be spread out for elevating and delivery, since pins delivered to plate 20 are received directly upon and carried upwardly by elevator E while pins on conveyor 16 are directed subsequently by that conveyor to the lower portion of elevator E after other pins have moved out of the way.

The oscillating movement of plate 2i? is effective in preventing jams of pins. Plate Ztl is provided adjacent its lower edge with a projection 23 resting on a roller 25 mounted on the upper end of an oscillator 4t) which is given a short up and down vibratory motion to cause plate 20 to oscillate about its pivots 21. Oscillator 40 (as shown in `Figure 2) is provided with an eccentric por- Y tion/48t on shaft 4 6 rotatably mounted in oscillator 40 whereby the latter is moved up and down as shaft 46 rotates.

In order to control the movement of oscillator 40, which is confined by the projections 50 secured to a transverse channel attached to the rear of the machine, at the lower end oscillator 40 is provided with a yoke 52 straddling the projecting end` of shaft 54 to which is fixed sprocket 28 engaging. with and driven by chain 24. To drive shaft a5-and eccentric 48, shaft i6 has mounted thereon, a sprocket 56 about which runs a chain 58 receiving movement from the sprocket 30 also secured to shaft 54 mentioned hereinabove. A laterally inclined plate 62y (Figure 2) mounted between the two spaced transverse panels 19, 27 assists in directing pins downwardly from plate towards the active pin elevating portion of conveyor E which is confined between panels 19 and 27.

Bowling pins delivered from the pit of the alley onto conveyor E are moved by flights 26 upwardly one by one (as shown in Figures l and 2) between guides 60 suitably supported between spaced transverse panels 19, 27 at the rear or" the machine. The upper end portions 61 of guides ilare curved and preferably overhang conveyor 64 in order to assist in the proper delivery and disposition of pins one by one into conveyor 64. Since the general construction and operation of conveyor E is substantially the same as that shown in the above referred to Rundell patent, a detailed description thereof is deemed unnecessary.

Sprockets 32 at the upper end of elevator E are mounted on shaft 68 journalled in bracket 70 fastened to the upper flanges of spaced transverse channel members 72 of the frame (Figure 4). One end of shaft 63 mounts a combined coupling and drive device or clutch 69 which includes a sprocket 74 tracked by a chain '7 6 driven from sprocket 78 mounted on the main drive shaft 801 operatively supported in a bracket 82 secured to the frame of the machine.

Shaft 80 is driven in proper timed relation from motor L S1 (Fig. 19) in order to actuate conveyor E and its associated conveyors in proper timed relationship during the operation of the machine.

Clutch'69 may be of any suitable well known type. A preferred form is a one-revolution clutch of the type made by the Hilliard Corporation, 512 Fifth Avenue, New York, New York, described in Clutch Bulletin 239, page 2. ln general, the clutch consists of a driving, and a driven member, which are coupled and uncoupled in well known manner when it is desired to drive or stop the movement of conveyor E and other mechanisms associated therewith. Driving member 84 is loosely mounted on shaft 68; coacting driven portion 86 is xed to shaft 63. Sprocket 74 which is associated with driving portion 84 may be formed integrally therewith or secured thereto in any suitable manner. Driven part 36 includes a cam S8 having a tooth 90 arranged to engage with a tooth 92 on a clutch operating lever 94 pivoted at 96 on amount 9S at one side of bracket ti (Figure 5). A spring 100 having one end attached to lever 94 and the other secured to a pin in mount 9S urges tooth 92 towards cam 88 for engagement with tooth 90 thereof.

The operation of elevator E continues so long as tooth 92 is held out of engagement with tooth 90 on cam 3S. This is effected by means of solenoid 104 which is provided with an armature 106 pivotally connected at 105 to lever- 94. During the operation of elevator E, solenoid 104 is energized. However, in the operation of the machine, it' it is desired to interrupt the rotation of shaft 68 and stop movement of elevator E, solenoid 104 is deenergized whereupon spring 100 swings lever 94 and locates tooth 92 in the path of travel of tooth 90 on cam 8S. Clutch 69 is disengaged when tooth 92 engages tooth 90.

Bowling pins elevated by means ofconveyor E through the-medium of flights 26 may be raised either heady foreare fixed to aligned stub shafts 112 (Figure 3).

most or bottom foremost. As each pin reaches the uppermost portion of conveyor E, it is guided from curved guides 61 forwardly and away from conveyor E and discharged into a pin transfer conveyor, designated generally 64.

ln the embodiment selected for purposes of illustration, pin transfer conveyor 64 is so positioned with respect to the uppermostportion of conveyor E that pins are delivered one by one therefrom between spaced conveyors, such as endless belts 107 running on pulleys 108, 169 and 11i).

Belts 107 are so mounted that each pin delivered therebetween will tend to swing upon the belts into butt end up position withthe head portion thereof depending downwardly between the belts and supporting channels or braces 72 secured to the frame ofthe machine. In this manner each pin discharged from pin transfer conveyor 64 will be arranged in handle endA down position as indicated in Figure 2.

Belts 107 preferably are substantially polygonal in cross section and are so arranged. that similar tapered sides thereof engage the tapered faces of the portion of each pin between the maximum diameter and the neck thereof. As shown in Figures 2 and 4, the pin supporting and conveying laps of belts 107 are inclined upwardly from the point of delivery of a pin from conveyor E to the discharge station above and adjacent the pin assembling conveyor, described in detail hereinafter.

The distance between belts 107 is always greater than the maximum diameter of the head of a bowling pin but less than the maximum diameter of the belly portion thereof. Belts 1417 are driven in the direction .of arrow 111 (Figure 2). Pulleys 103 which support belts 107 Pulleys 109 are securedto stub shafts 114 journalled in transverse channels 72. Pulleys 110 are journalled in supports 113 slidably mounted on rods 115 suitably attached to cross channels 72. Blocks 113 are urged by springs 117 outwardly'towards plates 119 fixed to the free ends of rods 115. ln this manner the proper yielding tension is maintained at all times in belts 107 and all slack is automatically taken up.

Attached to shafts 112 are sprockets 116 on which run sprocket chains 118 tracking sprocketsy 120 .fixed to shaft 122 journalled in bracket 70. Shaft 122 has secured thereto a pinion 12d meshing with pinion 126 fast to shaft 68. lt is evident that whenever elevator E is operated, belts 107 of conveyor 64 are also driven through the connections just described.

Although due to the spacing and type of belts 107 employed for conveying pins delivered thereto by conveyor E to a discharge position for delivery into a pin transport device, such as assembling conveyor 66, each pin tends automatically to assume a head-down position, indicated in dotted lines in Figure 2, mechanism is also provided for insuring that all pins are so delivered. Curved guide member 12S, suitably attached to a side frame of the machine and hood 129, projecting into the path of travel of bowling pins along conveyor 64 acts to displace each pin sideways as it is discharged from belts 107. In this way each pin is positioned for proper delivery at station L into a pin holder 164. Also acting in conjunction with the curved guide 128 is a positively. driven belt 130 driven in the direction of arrow R (Figure 2) which exerts a frictional pull or drive upon the head of each pin being discharged from belts 107 into pin assembling conveyor 66 such that each pin is given a positive push downwardly in the direction of the dotted arrow shown in Figure 2 into a pin holder forming apart of the pin assembline system.

Pin positioning conveyor 130 runs on idler pulley 132 and driving pulley 134. Pulley 132 is supported on shaft 133 suitably journalled in bracket 136 mounted on the machine frame; Pulley 134 is mounted on shaft 135l also suitably supported in bracket 136.

Pulley 134 is driven during the operation of conveyor 64 by means of a sprocket chain running on sprocket 13S attached to shaft 135, which sprocket chain also runs on sprocket 140 fixed to shaft 142 journalled in bracket 136 and sprocket 144 fixed to one end of one of the shaf 11.-. In this manner whenever a pin being advanced to the pin assembling conveyor 66 by conveyors 167 is positioned so that its head or handle portion is not properly disposed for delivery into an empty holder 164, the pin is displaced sideways so that the head is aligned relative to the center of the empty holder 164 by guide 123 and the head end thereof bears against a lap of conveyor 13) driven at a higher rate of speed than conveyors 107 which gives the head end of the pin a sharp push downwardly thereby directing it over guide 146 into an empty holder 164 of conveyor 66.

Guide 146 is provided with a curved surface 147 located adjacent the point of delivery of a pin into a holder 164. Guide 146 is suitably mounted on a channel member of side frame 2, as shown in Figure 2.

Bowling pins which pass head foremost from elevator E into transfer mechanism 64 are caused to travel head foremost along the same towards the point of discharge described above. Any bowling pins which are received butt end foremost by conveyor belts 167 assume a position, as they travel, in which the head portions thereof are positioned forwardly in the direction of travel prior to the time such pins arrive at the point of discharge. This action is accomplshed by the combination of momentum due to the speed of belts 167 and gravity. The spacing of belts 107 and the relatively small area of contact thereof with the belly portion of each pin provide substantially spaced points of contact or pivots about which each pin can turn due to momentum and gravity as it is conveyed by conveyors 107 to the point of discharge.

Mounted on channels 72 and extending lengthwise between the respective sets of pulleys S, 169 are two spaced vertical plates 148, the inner faces of which are disposed approximately in the planes of the inner faces of pulleys 168, 169. Actually the cross section of belts 107 .is such that their inner edges are positioned to overhang slightly the planes of the faces of the pulleys and plates 148 so that pulleys 16d, 109 do not obstruct the proper movement of pins being conveyed by belts 107. Plates 148 act to confine the pins and prevent them from tipping laterally relative to the path of travel towards channels 72 where they might, for example, strike against pulleys 199 or otherwise become jammed .in conveyor mechanism 64.

To assist in maintaining the upper runs of belts 107 in substantially parallel movement and to prevent them from being spread apart by the weight of pins carried thereby, the upper anges of the channels 72 have secured thereto inwardly directed belt guiding strips 151), the cross section of which is such that the belts may have a running lit therein.

1n order to prevent pins traveling along conveyor mechanism 64 from becoming dislodged therefrom by upward movement or being turned end for end, an inverted U-shaped hood 129 is provided. This hood ,includes two similar spaced upright flanged side plates in the bottom of which are lugssecured to cross frames 72.

As mentioned hereinabove, one of the main problems solved by this machine is that of so handling and arranging bowling pins that, regardless of variations ,in the maximum diameter of pins or changes in length due to dressing down and repairing such pins, pins conveyed to the receiving or station M will be positioned with their longitudinal axes substantially equil-distant from the axes of adjoining pins similarly delivered to station M. In this manner the pin transfers N which remove the pins from the holders 164 of the pin assembling mechanism 66 can properly grip, remove the pins from the holders and deliver them to spotter units 99 on table 101 for placement on the playing bed of alley G.

Another problem which is solved is that of making it possible to use only the number of pins required for play, normally two full sets of pins. It is, therefore, unnecessary to break sets of pins for answering the needs of the machine insofar as the receiving station M is concerned.

rlhe preferred form of pin assembling unit is shown in Figv 'es l, 2, 3, 7, 8 and 9. The pin assembly unit consists of two vertically spaced, horizontally positioned endless chain conveyors 156 running on driven sprockets 157 and idler sprockets 158 and 159 secured to vertical driving and driven shafts 160 and 161, respectively, supported in bracket 155 and suitable bearing brackets on top cross members 162., which are suitably attached to the frame of the machine. Shaft 166 which supports sprockets 157 may be made up of two aligned shaft units coupled togcther by a flexible shear coupling 149.

The triangular path of movement disclosed is employed because it makes possible a simple arrangement whereby pins can be delivered one by one .into a plurality of cups or holders attached to the endless conveyors forming the mechanism and then moved into straight line assembled relationship for delivery to a pin spotter. If desired, a different path of movement in a closed path could be employed.

Attached to chains 156 and equidistantly spaced therealong are pin supporting cups or holders, designated generally 164. ln the embodiment shown there are ten cups or holders 16-4. it .is obvious, however, that any desired number of cups necessary for supporting the minimum number of pins required by the rules of the game could be provided.

Each cup has a substantially cylindrical body having an inside diameter greater than that of the handle or head end of a pin to be handled thereby in order to insure that each handle or head portion of a pin can enter freely and be disposed and supported properly in a cup 16d. As shown in Figure 9, for example, each cup 164 .is provided with a curved, upwardly flaring flanged part which assists in the vertical positioning of each pin deposited in a cup 164 and also tends to hold each pin in proper vertical arrangement during the step by step loading of the several cups and the final transfer of all loaded cups to the pin receiving station M where the desired number of pins, usually ten, is removed by pin transfers N and placed in pin spotters 99. Disclosure and description of the construction and operation of transfers N and the spotting and respotting mechanism which sets and resets pins on a bowling alley G are limited herein to a minimum since the specific elements of these mechanisms form no part of the invention. The structure of transfers N and the spotting and respotting mechanism is substantially the same as that shown in the abovereferred to Rundell patent.

At the proper time during the operation of the machine, frame F which supports the transfers N, ten in number, moves downwardly under the action of a cam (not shown) to cause ten aligned transfer grippers N to grip aligned pins at station M. Continued rotation of this cam causes grippers N to move upwardly thereby removing pins from cups 164. By means of another cam 297 mounted on shaft 299, transfers N are moved along frame F and dispose the pins held therein in triangular arrangement above spotters 99. Further operation of the cam, which effects the raising and lowering of frame F causes transfers N to locate the handle ends of pins carried thereby in spotters 99 where they are gripped and held so that as transfer frame F rises, the pins remain in spotters 99. Since the mechanism for operating transfer frame F and grippers N is the same in construction and operation as that shown in the above referred to Schmidt Patent 2,578,319, further description and showing are omitted in the interest of brevity. The construction and operation of spotters 99 can be the same as shown and described in Rundell patent, No. 2,310,996.

During the continued operation of the machine, table 101 is lowered andturned and pins are left in spotted arrangement on the alley. Movement of table 101 to and from alley G is effected by suitable means, such as cables 301 attached to blocks 303 slidably supported in guides in side frames 2. Cables 301 are also attached to sheaves 305 on shaft 307 which mounts a pinion 309. A rack 311 meshing with pinion 309 carried by rod 317 is reciprocated in proper timed relation to accomplish the proper movement of table 101 by means of lever 323 on which is mounted a cam follower 341 tracking cam 343 on shaft 299. Since the mechanism just described is substantially the same in construction and operation as that disclosed in Schmidt Patent 2,578,319, further description and showing herein is deemed unnecessary.

As shown in Figure 9, each cup is rigidly fastened in vertically upright position to a bracket 168 having upper and lower lugs 170 projecting therefrom through which pairs of pins 172 pass connecting the cup brackets 168 to chains 156 in spaced relation along chains 156. At its upper end, each bracket 168 has an angular offset portion 174. As illustrated, this offset is substantially 45 from vertical and supports a roller 176 positioned to travel along the upper curved edge 178 of guide plates 180 stationarily supported in the triangular form, as shown in Figure 3, in order to support and maintain the cups whether loaded or empty in upright position in their travel in a polygonal closed path in the direction of the arrows shown in Figure 3.

Plates 180 terminate adjacent each of the sprockets on which chains 156 run. One of each of the sets of pins 172 carries at its lower end a roller 182 adapted to run along the outer upright faces of channels 162 and guide portions 163, 166 in order to assist in maintaining the loaded and unloaded cups in substantially vertical upright position at all times.

In order to maintain proper tension in the conveyor system 66, which includes chains 156, a resilient slack take-up is provided. This device consists of two pivoted chain guide portions 163, 166 which form the longest side of the triangular path of movement along which chains 156 travel (see Figure 3). Guide portions 163 and 166 at one end are attached to brackets 169 hingedly mounted on shafts 160, 161, respectively. At the free end of guide portion 163 is secured a U bracket 165 having mounted between its arms a shaft 171 on which are mounted spaced idler take-up sprockets 151. The spaced free ends of U bracket 165 support stub shafts 173 (one of which is shown in Figure 3) forming pivotal connections for spaced parallel links 152 (one of which is shown in Figure 3) pivotally connected by a shaft 153 to spaced arms of bracket 167 fixed to the free end of the other guide portion 166. The pivot shaft 153 carried by bracket 167 also supports two spaced idler take-up sprockets 154.

Mounted in channel 162, adjacent to guide portions 163 and 166, and engaging a part of bracket 165 is a pin 175 about which is located a coiled expansion spring 177. Pin 175 is provided with a head or disk at one end by means of which it is attached in any suitable manner as by Welding to bracket 165. See Fig. 3. One end of this spring bears against the vertical web of channel 162; the other end of spring 177 bears against the head of pin 175 in a manner to urge the free ends of plates 163, 166 about pins 173.

Sprocket 184 which drives shaft 160 in order to locate empty pin holders or cups 164 in pin receiving position relative to transfer mechanism 64 and to effect the delivery of ten loaded cups to pin receiving station M is driven by means of sprocket chain 186 which runs on sprocket 188 secured to shaft 190 journalled in a gear box 192 mounted on a suitable cross member of the machine. Shaft 190 mounts a bevelled gear 194, Fig. 9, which meshes with bevelled pinion 196 secured to one end of a horizontal shaft 198 having two parts, one a driving and one a driven portion coupled by a one-revolution clutch 200. Clutch 200 may be similar in construction and operation to clutch 69 described hereinabove. Clutch 200 has a cam 202, Fig. 3, attached to the driven part of shaft 198 which is controlled by a toothed lever 204 operative to engage and disengage a tooth (not shown) on cam 202 for coupling and uncoupling the driving and driven parts of shaft 198. Lever 204 is pivoted on housing 192, and is operatively controlled by a solenoid 208 in opposition to a pull-down spring 207. On the driving section of shaft 198 is mounted a sprocket 210 on which runs a chain 212 driven from sprocket 214 which in turn is driven by drive shaft on which it is mounted.

As each bowling pin delivered from belts 107 drops into a pin holder 164 of pin assembling mechanism 66, the handle thereof strikes against a trigger 216 which closes a switch 21'7 in the control circuit to energize solenoid 208 and thereby effect a movement of lever 204 out of engagement with the tooth on cam 202 and cause one revolution of shaft 198 to turn shaft 160 and index conveyor 66 one step. This removes a filled holder 164 from pin receiving position beneath belts 107, and locates the next empty holder at delivery or loading station L for disposition of a pin therein.

Further movement of conveyor 66 is interrupted until a pin is delivered into the empty holder 164 located beneath belts 107. Upon completion of the operation of filling ten successive cups, conveyor 66 is moved so as to travel all ten lled cups into aligned position at station M (as shown in Figure 3) ready for the removal of pins therefrom by transfer units N on frame F, as described hereinabove.

Attached to No. l pin holder 164 (as shown in Figure 3) is a lug 218 constructed and arranged to coact with the several switches positioned along the path of travel of the several cups or holders 164 which assist in controlling the operation of conveyor 66. After the removal of ten pins at station M for delivery to spotter units 99, by means of a control device described hereinafter, clutch 200 is engaged to effect the drive of shaft and cause the empty pin holders 164 to travel from station M along that portion of the triangular path (shown in Figure 3) which extends between shafts 161, 160, and thereby locate No. 1 pin holder 164 in position to receive the next pin delivered by conveyors 107 to delivery or loading station L. As No. l pin holder moves into receiving position at station L, lug 218 engages trigger 220 (Figure 8) of switch 222 suitably secured to the frame of the machine.

The operating mechanism is so constructed that conveyor belts 107 cannot operate until No. 1 empty pin holder has been located at station L. This includes a control described in detail hereinafter, which operates in conjunction with the driving mechanism of the conveyor 66 and prevents operation of pin transfer conveyor belts 107 until No. 1 empty pin holder has been located at station L.

The opening of switch 222 breaks the circuit through solenoid 208 thereby deenergizing the solenoid. Spring 207 moves lever 204 to position the tooth on lever 204 for engagement with the tooth on cam 2.52 whereupon clutch 200 is disengaged, the drive of shaft 166 interrupted and No. l empty holder 164 is positioned for delivery of a pin thereto at station L directly over switch operating trigger 216. During the successive delivery of individual pins by belts 107 into the several empty cups on conveyor chains 156, engagement of the head end of each pin deposited in a holder 164 with trigger 216 will cause an intermittent drive of shaft 160 and effect a stepwise movement of loaded cups from station L and empty cups into position for delivery of pins thereto at station L.

The step by step movement of conveyor chains 156 continues until the tenth pin or last pin of a set is placed in holder No. l0. At the time empty holder No. l0 is located at station L, lug 218 which is mounted on holder No. 1 is positioned for engagement with trigger 224 of control switch 226. As soon as chains 156 begin their movement following the deposit of the last pin of a set or No. l pin in No. lf) holder, which energizes solenoid 268 of the conveyor driving mechanism, actuation of switch 226 as the result of the engagement of trigger 224i by lug 21S causes continued energization of solenoid until all of the filled holders loll have been positioned in aligned arrangement at station M awaiting removal of the pins therefrom and their delivery to pin spotter units 99. As the several loaded pin holders 16d move into their positions in station M, lug 2id engages trigger 22%? of switch 232 and causes a deenergization solenoid at substantially the time pin holder No. l moves to its dwell position in station M whereupon all of the loaded pin holders 16d are located in proper aligned relationship relative to transfers N which deliver them to the spotter units 99.

The several switches arranged along the path of travel of holders 164 preferably are adjustably mounted on brackets secured to the frame of the machine. 'lhe adjustable mounting of each of the switches makes it possible to so position each switch that empty holders are properly located at station L, and filled holders are accurately positioned at station M for delivery of pins to spotter units 99.

Since all ten cups are filled there is no necessity for continuing the operation of either elevator E or pin transfer conveyors 267 and, therefore, as lug 2l@ engages trigger 224 it also engages switch trigger 229 (Figure 19) which deenergizes solenoid lofi of clutch 69 and throws out the back end conveyor operating mechanism. Movement of the filled cups into aligned position at station lvl causes lug 22S to engage trigger 22S of switch 23@ (Fig- 'ure i9). Actuation of trigger 225 causes an opening of switch 23d and a breaking of the circuit through solenoid Zilli thereby interrupting the drive of shaft 166) which stops the movement of conveyor 66.

rhe present invention provides a solution of the problern of automatically accomplishing in a bowling pin setting machine the changeover and substitution of the pins of one set for pins of another set. For example, if open play pins have been handled and spotted on a bowling alley for one or more games and the bowling alley proprietor finds it desirable that these pins be removed from the machine and replaced by pins in reserve, by means of the mechanism described herein, all operations incident to the substitution of pins are accomplished automatically with a minimum loss of time to the operator and delay to the players.

The pin storage mechanism includes an endless conveyor system, designated generally 249 consisting of two spaced endless chain conveyors 256. Drive shaft 25@ supports two vertically spaced driving sprockets 254 on which chains 256 run, which chains also engage vertically spaced sprockets 258 on driven shaft 252. Attached to endless chains 256 and spaced equidistantly therealong is a plurality of pin holders or cups 26d. Since in the machine described, two sets of pins are used, twenty cups 264i are provided in order to hold in reserve a number of pins corresponding to those in play in the machine. Although a set usually consists of ten pins, it is obvious, if desired, more or less could be used in which case the number of cups 26d would vary accordingly.

Attached to brackets 262 which provide bearings for shafts 25d and 252 are vertically positioned parallel plates 26d. rlhese plates extend between shafts 25u, 252 (as shown in Figure 8) and provide supports for plates 266 having a top edge flared portion 267 on which run rollers 26S rotatably mounted on extensions 27d formed in brackets 272 (Fig. 9). The latter, which are fastened to cups 26d, are secured by pins 274 to chains 256 and travel therewith in a manner similar to the mounting of cups 264-3 described hereinabove. One of the pins 274 of each bracket is provided with a roller 276 (as shown in Figure 9) adapted to roll along plates 264, and in con.- junction with roller 26S maintain each cup 266 in proper vertical position at all times for delivery and removal of bowling pins therefrom.

Each cup 260 consists of a semi-cylindrical member or half-cup having at its upper end an outwardly flared portion 261 provided with transverse slot 263. The purpose of slot 263 will be described hereinafter. Members 26@ are mounted along chains 256 with their open sides facing outwardly. Rails 246, 247 coact with cups 26a) and ceniine pins therein.

As shown in Figure 8, rails 246, 2M at each end of storage device 249 have substantially semi-circular portions concentric With the axes of shafts 256, 252. In this manner pins can be supported by members 269 and rails 246, 247 as chains 256 move in an endless closed path through device 249 in the operations of storing and delivering pins. At one side of storage device 249 adjacent the bowling pin spotting machine, rails 246, 247 are cut away, as at 28), thereby forming an ejecting or discharge station, and are secured to brackets 232 suitably attached to channel 240., The opening 281 provided between rails 246, 247 furnishes a space through which pins in reserve can be delivered to the bowling pin setting machine, and more specifically to conveyor E during pin changing operations.

Extending parallel with and above one of the plates 264 is a section of horizontal rail 284i substantially 'rl-shaped in formation with the arms of the U secured to brackets 285 mounted on channel 249.

The horizontal portion 287 of rail 234 which is positioned opposite discharge opening 251 assists in maintaining pins in cups 269 in proper substantially vertical arrangement. Gpposite rail 23d and substantially parallel thereto is mounted a bar 236 having its ends secured to brackets 282. Bar 286 which assists in holding pins in cups 26@ also carries a switch 238 from which depends an operating linger 296 so disposed as to be engaged successively by pins being discharged from cups 264i for dclivery to conveyor E. Thus, if a pin becomes jammed or fails totip far enough out of a cup 269 to fall out therefrom, switch 288 is not actuated. This prevents a further indexing of chains 256 and cups 2 d under actuation of a one-revolution clutch 3.712 described hereinafter which controls the step by step movement of chains 256.

Chains 256 are driven by motor 292 supported on channel 240 (see Figure 7). Motor shaft 2% carries a pulley 296 connected by belt 29S to pulley loosely mounted on a stub shaft 332 suitably supported on the underside of channel 240 and depending therefrom. Secured to pulley 300 is a pulley 304 on which runs belt 396 also running on and driving pulley 3tlg supported on shaft 310 on which is mounted a one-revolution clutch 312 which may be similar in construction and operation to clutch 69 described hereinabove. Further detailed description thereof is deemed unnecessary.

A sprocket 324 mounted on shaft Si@ is connected by chain 316 to a sprocket 31S fixed to the lower end of shaft 250 and operative to drive chains 256 by means of sprockets 254 supported on shaft 256. Clutch 312 is actuated to operate one revolution at a time in order to drive chains 256 step by step and thereby present cups 26? for loading and discharging pins. Under certain conditions described hereinafter, clutch 312 can be actuated so as to effect a continuous drive of shaft 3l@ for a predetermined number of revolutions.

Clutch 312 consists of driving and driven parts Sidi, 315, respectively. Clutch 322 can be actuated to operate one revolution at a time in order to drive shaft 254i and advance holders 266 stepwise to a point adjacent loading station L Where pins are delivered thereinto. Under certain conditions, described more in detail hereinafter, clutch 312 is held in order to drive shaft 25? through a plurality of revolutions.

The mechanism for controlling the operation of clutch 312 includes a clutch throw-out lever 32@ (Fig. l0) pivotally supported on bracket 321 fastened vto the'underside of channel 240 and provided with a tooth 322 adapted toV engage with a tooth 324 on driven part 315 when the clutch is thrown out. Lever 320 is pivotally connected by link 325 to armature 319 of solenoid 349.

I'he operation of the storage and pin changing mechanism is controlled by a series of cams 326, 328, 330, 332, 334, 336 and 482 (see Figures 7, and l1), all of which cams are mounted on a shaft 338 journalled in bracket 321 fastened to channel 240. Shaft 338 has secured thereto a worm wheel 34@ which operatively engages a worm 342 formed on the lower end of shaft 310 for effecting rotation of shaft 338, and cams 326, 328, 330, 332, 334, 336 and 482 mounted thereon.

Mounted on bracket 321 is an aligned series of seven switches which may be of the well-known micro-switch type. As shown in Figure 11, switches 327, 329, 331, 333, 335 and 337 are positioned in line with cams 326 to 336, inclusive, so that cam 326 coacts with switch 327; cam 328 coacts with switch 329, etc.; switch 484 is positioned in line with cam 482. The cooperative engagement between cams 326-336, inclusive, and switches 327-337 and switch 484 with cam 482 is such that one of the several switches is actuated by a particular cam at a particular time in the cycle of operations of the machine and the storage devices. The operation of these switches is described more in detail hereinafter in connection with a description of the electric circuits employed.

Referring to Figure 9, it will be recalled in View of the description hereinabove that each time a pin drops into a cup 164 at station L, a switch 217 is operated by the engagement of the pin head with trigger 216 to close a circuit through a solenoid 208 to index conveyor chains 156 of the pin assembling conveyor 66 a distance suicient to locate an empty holder 164 at the loading station pending arrival of the next pin and its deposit in the empty holder.

Under normal operating conditions during play of a game, the pin storage device is inoperative and contains two sets of ten pins, which in Figure l2 are designated C and D. Figures 7 and 8 show only supporting cups sufcient to hold fourteen pins. The other cups have been omitted in order to conserve space. Diagrammatic Figure 12, however, illustrates the relative arrangement of twenty pins forming two full sets supported in two substantially parallel straight lines in storage device 249.

Referring to Figures l, 2 and 9, it will be seen that the preferred position of the pin storage mechanism, designated 249 and the several pin supporting cups 260 is below the position occupied by the several cups 164 of the pin assembly mechanism. In this way, pins diverted from cups 164 can move by gravity downwardly and into cups 260 for storage. The pin delivery position or station LS for pins being diverted from pin assembly conveyor mechanism 66 into storage 249 is substantially in the same vertical plane and alongside but lower than station L (Fig. 2). In order to divert pins from movement from belts 107 into cups 164 there is provided a detlector or guide 344 arranged between stations L and LS. Under normal operating conditions, when pin changing and storage device 249 is inoperative, delector 344 is maintained in substantially a vertical position (shown in full lines in Figure 9) out of the path of travel of pins from belts 107 to station L. Deflector 344 is maintained in inoperative position by means of spring 346 (Fig. 8) mounted on pivot shaft 348 which supports the detlector for swinging movement.

When it is desired to interrupt the delivery of pins into cups 164 and direct them into holders 260 in order to remove pins from play and place them in storage, deflector 344 is shifted to dotted line position (shown in Figure 9) against the action of spring 346 having a tail portion 347 which bears against a part of deector 344 and normally maintains it in substantially vertical position. This oper- 14 ation locates deector 344 in position to receive all pins being delivered by belts 167 from conveyor E and because of the general U-shape cross section of deiiector 344 (see Figure 8) each pin is guided downwardly into a cup 260 of the storage conveyor mechanism. As each pin enters a cup 260 at station LS, the head end thereof strikes a pins-in switch 35i) which effects the energization of solenoid 349 which actuates clutch 312 to drive shaft 250 and chains 256 and move the filled cup 260 from receiving station LS and locate an empty one in its place pending disposition of the next pin therein. Deector 344 is provided with a guide portion 345 which coacts with guides 146, 147 in guiding pins delivered by conveyors 107 into proper position in holders 164. Movement of deflector 344- into pin diverting position is limited by means of spaced plates 354 attached to deilector 344 provided with shoulders 356 which engage a transverse stop 358.

The mechanism for shifting pin detlector 344 from its inactive position (shown in full lines in Figure 9) to operative pin dellecting position includes a forwardly extending arm 360 secured to one end of apivot shaft 348 and having at its free end a pin and roller 362. Straddling roller 362 is the forked end of a plate 364 fixed to the upper end of a reciprocable rod 366. Plate 364 is provided with a slot 365 in which rides the turned down end of shaft 348 which is mounted in a substantially U-shaped bracket 368 secured to bars 246, 247. The center part 369 of bracket 363 forms a continuation of deector 344 and prevents pins en route to cups 260 from falling downwardly between bars 246, 247. The lower end of rod 366 is pivotally connected at 37) to the armature of solenoid 372. When solenoid 372 is energized, the downward movement of rod 366 causes the forked end of plate 364 attached to rod 366 to effect a downward force on roller 362 which causes arm 3613 t0 move downwardly, in a counter-clockwise direction, thereby moving deflector plate 344 from the full line to the dotted line position as viewed in Figure 9.

During the transfer of pins from holders 260 of Storage device 249, pins pass from holders 266 through opening 281 for delivery to conveyor E. The mechanism which assists in removing pins from holders 26@ consists of a finger or cam 374 pivotally mounted at 376 in a bracket 377 mounted in the space between plates 264 and secured thereto. Finger 374 normally occupies the inoperative position shown in Figure 8 where it is held out of the path of travel of pins supported by cups 263 in the front or forward section of pin storage device 249 (Figure 8). Pivotally connected to iinger 374 is one of a pair of toggle links 37S. The common pivot of these links 373 is in turn connected to a link 33t) operatively4 secured to the armature of solenoid 332 (Figures 7 and 8). When solenoid 332 is actuated, toggle links 37S are straightened thus swinging the free end of arm 374 forwardly into the path of movement of pins carried by cups 26) and held therein, adjacent opening 231, by engagement with bar 236 and part 237 of bar 234.

As each pin moves into engagement with the free end of arm 374, when the latter is located in pin discharging position, it will be swung outwardly away from its respective holder 260. Each pin engaged by the free end of arm 374 is, therefore, directed away from and falls from its support 260 outward through opening 231 for delivery to conveyor E. Each cup 260 is slotted at 263 in order to permit arm 374, when located in pin removing position, to project through the wall of the cup, engage a pin supported therein, and effect its removal therefrom in the manner described.

It is evident that as each pin slides and drops away from its respective support it engages trip finger 290 of switch 288. This closes the circuit operating solenoid 349 and clutch 312 and effects a stepwise movement of conveyor chains 256 to position lled cups 260 in succession at pin discharge position adjacent opening 231.

As mentioned hereinabove, the preferred form of my invention illustrated is adapted primarily for use with a bowling pin spotting machine of the type shown in Schmidt Patent 2,578,3l9 and Broekhuysen Patent 2,599,274. In the pin spotting machine shown in these patents, there is provided a table lill upon which are mounted spotters 99 and respotters 193. At appropriate times during the operation of the machine, when it is desired to spot a new set of pins on the alley, the table with ten pins located in spoters 99 is turned and lowered in order to spot ten pins carried thereby in playing arrangement on the playing bed of the alley. Also at the appropriate time during the operation of the machine, after the rolling of the rst ball of the frame, respotter units 1113 are operated to grip, lift and respot any pins remaining standing after the throwing of the tirst ball. in the Schmidt and Broekhuysen patents above referred to the spotters and respotter units are operated by suction through suitable mechanism (not shown herein) for gripping and releasing the pins in order to spot a new set of pins on the alley pending the throwing of the next ball or to respot in oncr off-spot position pins which were lifted prior to the operation of sweep S.

Figures 12-18, inclusive, show diagrammatically a general schematic manner in which pins lare handled in effecting a changeover from two sets of pins in play to two sets of pins in reserve or in storage. ln Figure 12 normal pin arrangement is shown. The machine is ready for normal play. Pins of set A are located in playing arrangement on the alley, pins of set B are held in transfer cups 164 of the pin assembling conveyor o6 and pins of sets C and D are supported in cups Zeil in two rows in storage device 249.

Assuming that it is desired to substitute sets C and D for sets A and B, reference to Figure 13 is made. ln this figure pins of set A have been lifted by respotters 163, pins of set B have been transferred into spotters 99, pins of set C are being removed from storage device 249 for delivery into pin assembling conveyor cups 164 and pins of set D remain in their cups in storage device 249.

ln Figure 4 pins of set A have been replaced on the alley, pins of set B remain in spotting table spotters 99, pins of set C which were delivered from storage device 249 are being moved by pin assembling conveyor 66 to storage M and the pins of set D remain in storage device 249.

ln Figure l5 pins of set A have been swept into pit P, and are being delivered to storage device 249. Pins of set B have been spotted on the alley, pins of set C await delivery into spotters 29 and pins of set D remain in the rear row in storage device 249.

ln Figure 16 pins of set B have been lifted by respotters 193, and pins of set C have been delivered from holders 164- of conveyor 66 to spotters 99 whereupon the holders are moved to the pin loading station to receive the pins of set D which are now being delivered from storage following the completion oi the delivery of the pins of set A into storage.

in Figure 17 pins of set B have been swept into the pit and are being delivered to storage device 249, pins of set C are being located on the alley and pins of set D have all been transferred into holders 164 of conveyor e5.

Finally as shown in Figure 18, pins of set C are on the alley, pins of set D are held in pin holders 16d of assembling conveyor do and pins of sets A and B are in storage in storage device 249.

The operations involved in ehecting the complete transfer and substitution of one or two sets of pins in the pin setting machine for two sets of reserve pins in storage device 249 can best be understood by a reference to Figure 19 which shows a suitable wiring diagram for controlling the operation oi the machine, and to the steps shown schematically in Figures l2-l8, inclusive, described hereinabove. For simplicity in description it is assumed that the pin spotting machine is in condition for the rolling of a rstball of a frame. Therefore, as illustrated diagrammatically in Figure l2, one set of pins A in play is standing on the alley, another set of inplay pins B is located in pin distributing holders 164 ready to be removed by grippers N and delivered to spotters 99. There are also twenty pins or sets C and D in two rows of ten in storage device cups 2611.

To start the operations necessary to change two sets of pins, switch 409 is turned to position ZS (Figure 19) corresponding to changing two sets of pins to close contact 410i momentarily. Switch dit@ may be any suitable type of three contact switch such as a wiper switch. It is provided with a 2S position, an off position and a 1S position. Switch dil@ is located conveniently on any readily accessible part of the frame of the machine or at the front of a bowling alley or in the managerss ofiice. When switch contact 401 is closed momentarily it causes the energization of relay dit) and closes contacts 48051, illb and 486e which nullify the normal operation of cam 482 upon switch 484. Relay 464 is energized and locked in by its contact dilda and double throw switch 327. At the same time, contacts 46417-4941), inclusive, are closed. This action causes motor 292 and carns 334, 336 to operate in the manner described hereinbelow.

Closing of contact 404C results in what is termed a fake ball by shunting pit switch 403. This is the equivalent of having a bowling ball and/ or bowling pins drop into pit P and actuate pit switch 40S, which in normal play closes the starting circuit. This actuates the pin setting machine through a normal rst ball cycle similar in operation to that described and shown in the above referred to Broekhuysen patent.

Since, however, an actual ball has not been thrown, no pins are knocked down. Therefore, when the table lill cornes down, respotter cups 103 grip the ten pins of set A which are standing on the alley and the table rises and locates spotters 99 in pin receiving position relative to pin transfer frame F. Grippers N then remove the pins of set B from the pin holders 164 at station M, and transfer them to spotters 99 on table 101. ln the meantime sweep S has operated but since there were no pins on the alley, none can be swept into the pit. After sweep S returns to inactive position, table lill is lowered with twenty pins, and respotters 103 release and respot the pins of set A on the alley. Table 101 then rises with the ten pins of set B in spotters 99 and dwells.

ln the meantime, when frame F which supports grippers N moves upwardly lifting the heads of the pins of set B clear of the pin distributing holders 164, one of the longitudinal bars 35 forming a part of frame F engages and closes switch 41@ thereby energizing relay 412 which is locked in by its contact 412e. Closing of contact 41217 energizes solenoid 238 which allows one-revolution type distributor clutch Ziiil to be thrown in and effect the movement of the now empty train of pin distributing holders 164 along the diagonal side of the triangle, until lug 21S on No. l holder 164i engages trigger 220 and opens switch 222 thereby deenergizing relay 412 and solenoid 203, which throws out clutch Zilli. Movement of chains 156 is thereupon interrupted and the No. 1 cup stops at station L directly over trigger 216 of switch 217 ready to receive one of the pins which are about to be ejected from storage device 249 into the rear elevator E of the pin spotting machine.

After the removal of the pins of set B, as empty holders 164 move away from station M, lug 216 on No. 1 holder moves ont of engagement with a second ball switch 414 and the contacts of said switch open. The function of this switch will be described later. As mentioned hereinabove, the control mechanism for operating the bowling pin spotting machine, described and illustrated herein, is of the same construction and operation as that shown and described in said Broelshuysen patent. Further detailed showing and description is, therefore,

17 deemed unnecessary and is omitted in the interest of brevity.

As the train of empty holders 164 moves towards the loading station L, rotation of shaft 255 (Figure 19) causes a cam (not shown) which may be of the same construction and operation as shown and described in said Broekhuysen patent, in cam box 420 to close a circuit in the machine control 422 which energizes and holds in relay 424 thereby closing its contact 424e.

When lug 218 on empty No. l cup 164 operates switch 222, it also closes another switch 426, which preferably is mounted on the same adjustable support to which switch 222 is attached. Switch 426 has two contacts 426:1 and 42617. The closing of contact 426a energizes relay 428 of the machine control mechanism 422. Relay 428 is locked in by its contact 428a. The closing of contact 42811 energizes the solenoid 104.

The shaft of motor 81 is provided with a driving pulley 433 on which runs a belt 434 running on pulley 435 secured to shaft 80. This shaft mounts a sprocket 78 on which runs a chain 76 driving sprocket 74 of clutch 69. At the proper time during the operation of the machine, by means of clutch 69, described hereinabove, which is actuated by solenoid 104 upon closing of contacts 428b, conveyors E and 107 are caused to operate.

At the same time that contact 426a closes, contact 426b also closes and energizes relay 432 which is held in by its contacts 432a. Contacts 432b open, thereby preventing energization of solenoid 372 which moves deector 344 into operative position. Hence, the ten pins of set C, which are about to be discharged from storage device 249 into elevator E conveyor will be conveyed thence to conveyor belts 107 and delivered in the manner described hereinabove one by one into the cups 164 of the pin distributing conveyor 66.

Contacts 432e` close and in conjunction with contacts 404b, which are closed at this time, energize and hold in relay 436. The closing of the contacts of relay 436 also energizes solenoid 480 for a purpose described hereinafter. The closing of contacts 436e and 436b also starts the storage motor 292. As the operation of the pin spotting machine stops at the end of a normal first ball cycle, a cam (not shown) forming a part of the machine control 422 referred to hereinabove, on shaft 255 in cam box 420 opens a switch (not shown) in the machine control circuit which deenergizes relay 424. However, elevator E continues operating due to the fact that relay 436 is energized by cam 326, as described hereinbelow. At this time relay 404 is still locked in and its contacts 404d are closed; therefore, storage clutch solenoid 349 is energized allowing one-revolution type storage clutch 312 to engage and effect the drive of shaft 250, which moves chains 256 and cups 260 attached thereto.

As the storage motor 292 operates, it effects the drive of the storage conveyor chains 256, and cams 326-336, inclusive, on shaft 533. As clutch cam 332 turns, it closes its switch 333 and keeps solenoid 349 energized thereby keeping the storage clutch engaged long enough to permit the lirst pin in the rear row of the storage conveyor, or the first of set C, to be conveyed to the opening 281 of Storage device 249 where linger 374 is made operative to eject pins therefrom.

Just before the arrival of pin No. 1 of set C at the ejecting station at opening 281 (Figure 8) knock-out cam 328 closes its coacting switch 329 energizing knockn out solenoid 382 thereby operating and holding ejecting arm 374 in ejecting position relative to pins engaged there by as pin filled cups 26h travel therepast. When arm 374 is in ejecting position, it holds interlock switch 375 closed thereby putting and holding pins-out switch 288 in the circuit of the storage clutch solenoid 349.

While the storage conveyor chains 256 are travelling, motor 292 and elevator cam 326 operate double throw switch 327. This deenergizes relay 404 opening all its 18 contacts. Operation of switch 327 also provides an alter-v nate circuit to keep relay 436 energized to keep the rear elevator E operating and storage motor 292 running.

The rotation of cam 332 opens switch 333 and stops storage conveyor 249 with the first of the cups 26? holding pins of set C at the ejecting station. Opening of switch 333 permits the storage clutch 312 to be open ated at this time, only by the pins-out switch 288.

The ejection of the rst pin of set C by ejecting arm 374 closes switch 288 momentarily energizing clutch solenoid 349 which allows storage clutch 312 to engage and advance the pin storage conveyor chains 256 one cup at a time by the action of successive pins being ejected and closing switch 288 until all ten pins of set C are ejected into the now operating pin spotting machine rear elevator E. After the tenth pin of set C is ejected, clutch cam 332 closes its cooperating switch 333, and storage clutch 312 is thrown into drive shaft 250 in order to move the now empty cups 260 from which the pins of set C were ejected around until the first cup 260 is located beneath deilector 344 at which place movement of this cup stops through the action of cam 332 which opens switch 333.

While the storage conveyor chains 256 are moving empty cups 260 around, knockout cam 323 opens switch 329 and deenergizes solenoid 382 which returns ejecting arm 374 to a non-ejecting position and opens interlock switch 375 which removes the pins-out switch 288 from the circuit of clutch solenoid 349.

Also, during the travel of conveyor chains 256, deilector cam 330 has closed switch 331 but deector solenoid 372 is not energized because contacts 4321: are open at this time. Also during this travel of chains 256, fake ball cam 334 throws another fake ball by closing microswitch 335. The circuit arrangement is such that at this time no action occurs in the pin setting machine. Since the action takes place at a future time, it will be described hereinafter.

Since the elevator E starts running before pins begin to be ejected from the storage conveyor, therefore, from the time the first pin is ejected from storage cups 260 and during the above mentioned interim of empty storage cup travel, ejected pins are being elevated and conveyed into the Vawaiting empty holders 164 of the pin assembling conveyor 66 at station L. The operation is as follows:r

As a pin being delivered from the conveyor belts 107 is deposited into awaiting empty No. l holder 164 of the pin assembling conveyor 66, the head of this pin strikes trigger 216 and closes switch 217. This action energizes clutch solenoid 208 which throws in distributor clutch 200 and allows the pin assembling conveyor 66 to index its train of cups, so that the second empty cup is advanced to station L directly over trigger 216 of switch 2l7 awaiting delivery of the next pin from belt conveyors 107.

This operation continues until all ten holders 164 are loaded. When the No. l0 cup is filled and the loaded train of holders 164 moves forward, lug 21S on No. 1 holder 164 engages trigger 224 and closes switch 226. This energizes relay 41.2 which is held in by its contact 412e. Closing of contact 4121; engages distributor clutch 200 which causes the loaded train of holders 164 to advance toI pin station M.

At the same time that the lug 213 on No. l holder 164 closes switch 226, it also opens switch 219 which deenergizes relay 428, but the elevator E continues running due to the fact that cam 326 has relay 436 energized, as described hereinabove.

At the end of the loading run of assembling conveyor 66, lug 218 of No. 1 holder 164 engages trigger 228 and opens switch 230. This deenergizes relay 412, which deenergizes solenoid 203 throwing out clutch 200 thereby stopping the loaded holders 164 at the pin station M ready to have the pins held in cups 164 removed by grippers N.

At thesame time that the lug 21S on No. l holder 164 opened switch 23h, it also momentarily operated switch 22S which is mounted beneath switch 234i. As No. l

io der sofi moved to dwell position (shown in Figure 3), n 2id closed second ball switch die mounted on cross frame 22?.. The function of switch 41.4 will be explained hereinafter.

At the time when the tenth holder l64 is filled and the loaded train of holders 164- starts forward a lug 450 on No. l0 holder '64 opens a switch 452 mounted adjacent station L (Figure 3). This deenergises relay 4.32 and closes its contacts 4321) which allows deliector solenoid 372 to be energized and tilt deiiector 344 into storage delivery position. It is held there through the action of deflector cam 33) and switch 33t which. 1s closed at this time. This will insure the delivery of pins which are about to be swept from the alley and conveyed by elevator E and belts M7 into the now awaiting empty cups 260 on chains 256 of the storage device 249.

As previously mentioned falte ball cam 334 closes microswitch 335 but no action takes place at that time due to the circuit arrangement. However, now that the loaded train of holders 154 of pin assembling convey-or 66 have reached the pin station ivi and are ready to have pins held therein removed by grippers N, the circuit is now so actuated that the result is the same as 1f a sec ond bali of the first frame of a game were rolled. This is termed throwing a second faire ball.

Therefore, the pin spotting machine now goes through a normal second ball cycle. Table itil descends, but does not pick up any of the ten pins which are standing on the alley since respotters 303 are deenergized. Table itil then rises, and sweep S operates, sweeping the standing ten pins into pit l from where they are conveyed by apron sti onto the now operating rear elevator E. Table lill now turns lSO" and sets the ten pins which were held in spotters 99 on alley G and then rises.

During the operation of the pin spotting machine, a cam (not shown) on shaft 255 of the machine control in cam box 420 energizes relay 424 and holds it in. The pins in elevator E are elevated, conveyed by conveyor belts 107 and discharged therefrom into deflector 344 and into now awaiting empty storage cups 260, at which time each pin upon being deposited into a cup closes the pins-in storage switch 35% which energizes solenoid 349 which allows storage clutch 33.2 to engage, and advance the pin storage conveyor chains 256, one cup at a time, until all ten cups 260 are filled, at which time clutch cam 332 keeps the storage clutch engaged long enough to run the storage conveyor around so that the first pin of the original second set of storage pins (set D) arrives at the ejecting station 281.

While the storage conveyor is travelling fake ball cam 336 effects what is termed throwing a third fake ball, rst ball, second frame. The second ball switch 414, previously mentioned, is at this moment being held closed by the lug 21S on the No. l holder 164, thus insuring that the closing of switch 337 by cam 336 will shunt the pit switch 408 and put the machine through a normal rst ball operation, unless the required number of pin assembling holders 14, ten as shown, each contains a pin and is located in proper position at station M.

Therefore, when the lled holders are positioned at station M, as described, pit switch 498 is now shunted and there is provided a repeat cycle thereby effecting a complete transfer of the two sets of pins C and D which were in storage device 249 for the two sets of pins A and B which were in the machine.

After delivery of the tenth pin of the second set of original pins in the pin spotting machine to storage device 249, the movement of storage conveyor chains 256 is interrupted, and motor and elevator cam 326 opens its double throw switch 327 which shuts off the motor 292 and `pin setting machine elevator E.

Relay 489 is deenergized at the proper time at the completion of the changing of two complete sets of pins by deenergization of relay 436 by the opening of contact 436e, which opens the hold-in circuit of relay 480.

When it is desired to exchange only one set of pins, switch 400 is thrown clockwise to the 1S position which effects a closing of a contact 402, rendering relay 486 inactive. At this time cam 482 prevents the control 0perating effect of throwing a third fake ball by opening the circuit to contacts 337 prior to the time the third fake ball would normally be throw but after the second fake ball is thrown. Switches 484 operated by cam 482 also open the circuit of motor 292 through contacts 436k of relay 436 causing motor 292 to stop. This operation sets the machine for the next at-will operation of the machine.

The invention above described may be varied in conu struction within the scope of the claims, for the particular device selected to illustrate the invention is but .one of many possible concrete embodiments of the same. It is not, therefore, to be restricted to the precise details of the structure shown and described.

What I claim is:

l. In a bowling pin spotting machine, a pin spotter', means for conveying sets of pins to said spotter, a pin storage, a pin diverter for conveying pins delivered thereto by said conveying means into said storage, an operating device for said diverter, means normally incapaeitating said operating device of said diverter whereby said conveying means delivers pins to said spotter only, mechanism for removing pins from said storage, and selective control mechanism for selectively operating said diverter operating device and said removing mechanism to effect the removal of one or two sets of pins from said storage and the delivery of a like number of sets of pins to said storage, and means receiving pins removed from storage and delivering them to said conveying means.

2. In a bowling pin setting machine, a pin spotter, a pin receiving station, means for transferring pins from said station to said spotter, a conveyor 4for delivering pins to said station, a pin storage, mechanism normally op` erative to deliver pins to said conveyor, a pin` deector, movable means normally supporting said deflecto: in an inoperative position relative to the discharge end of said conveyor, and selectively operated means including means for moving said deilector into the path of movement of pins discharged from said conveyor for interrupting the flow of pins to said station and effecting the delivery thereof by said defiector into said storage, said last-named means including mechanism operative in response to the delivery of a predetermined number of pins to said storage for returning said deiiector to said inoperative position, and

thereby reestablishing the delivery of pins to said station.l

3. ln a pin spotting machine for use on a bowling alley having a bed and a pit at the rear end of said bed, in combination, pin receiving means for receiving in-play pins for re-use in said machine, a pin storage in said machine for receiving pins for transfer out of use in said machine, an endless conveyor in said storage, a plurality of pin supports on said endless conveyor for supporting a reserve set of pins for substitution in the machine in place of in-play pins transferred out of play, a pin elevating conveyor normally operable to remove pins from said pit of said alley and deliver the same to said pin receiving means, means selectively operable to transfer pins from said pin elevating conveyor into said pin storage, and means selectively operable for delivering reserve pins from said supports in said storage to said pin receiving means.

4. The machine defined in claim 3 wherein said pin receiving means comprises an endless conveyor, a plurality of spaced pin holders mounted on said conveyor and movable therewith, and pin actuated means operative in response to the arrival of a pin in one holder for moving the next empty holder into position to receive the next pin delivered by said pin elevating conveyor.

5. In a bowling pin spotting machine, a ,pin receiving pins one after another to said station, pin transport 

